Fiee escape



(No Model.)

T. P. HOLT.

HRB ESCAPE.

Patented feb. 2l, 1888.

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` Uivrrnn STATES PnTnnT Ormes.

THOMAS P. HOLT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE G. W1 8: F.SMITH IRON COMPANY, OF SAME PLAGE.

Fl REEESCAPE.

SPECIFICATION forming pari: of Letters Patent No. 378,316, datedFebruary 21, 1888.

Application filed July l1, 1887. Serial No. 243,958. (No model.)

T0 @ZZ whom, it may concern.-

Be it known that l, THoMns l?. HOLT, of Boston, county of Suffolk, andState of Massachusetts, have invented an Improvement in Fire-Escapes, ofwhich the following description, in connection with the accompanyingdrawings, is a specification, like letters on the drawings representinglike parts.

This invention relates to lire escapes, and has for its object toimprove the construction and cheapen the cost of the same.

My improved fire-escape comprises a folding ladder counterbalanced by aweight suspended near the top of the building to which the ladder isattached, the said ladder being easily let down and folded up, asdesired.

The particular features in which my invenltion consists will be pointedout inthe claims at the end of this specification.

Figure l shows asuflicient portion of abuilding provided with myimproved fire-escape to enable my invention to be readily understood.Fig. 2 is aview of a seetionof theladder broken off and on an enlargedscale, the ladder being let down; Fig. 3, a similar lview as Fig. 2withthe ladder folded up, and Fig. 4 a top view of Fig. 2.

Referring to Fig. l, A. representsabuilding to which is attached myimproved lire-escape or ladder.

The ladder referred to (shown best in Fig. 4) has its sides made, asshown, of channelbars a a', to which are pivoted, as at 0.2 0.3, therounds a* of the ladder. The channel-bar a is secured to the building Ain a desired or welllcnown manner, and has attached to it side pieces,l), which form with the baci; piece, D', ofthe channel-bar a a chamber,in which the rounds are concealed and protected from inclement weatherwhen the ladder is folded up, as shown in Fig. 3, the back piece, b',being shown as secured to the channel-bar ci by bolts b2. (See Fig. e.)The channel-bar et has secured to it a rope, chain, or cable, c,extended upward and passed about pulleys c ci, as herein shown, at' thetop of the building, the said rope or cable having attached to its otherend, as shown7 a weight, d, (see dotted lines, Fig. l,) whichsubstantially counterbalances the weight ofthe channel-bar aand roundspivoted thereto.

The ladder, as shown in Fig. l, is in position ready for use, and if itis desired to fold up the ladder it is only necessary to push upward onthe side a', the weight d serving to keep the ladder in its foldedposition (shown in Fig. 3) until it is again positively unfolded orpulled down.

I claim-- 1. In a fire-escape, the channel-bar a, having side pieces, b,combined with the channel-bar a', having a back, b', and with rounds a",pivoted to said channel-bars, the said baci; b cooperating with thesides b to form a chamber when the ladder is folded up, and wherein therounds are concealed and protected from in clement weather,substantially as described.

2. n attire-escape, the channel-bara, having side pieces, b, combinedwiththe channel-bar a', having a back, b', and with rounds at, pivotedto said channel-bars, the said back b cooperating with the sides b toform a chamber when the ladder is folded up, and wherein the rounds areconcealed and protected from inclement weather, and withacounterbalancingweight, d, attached to the upper end of the sides a',substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS P. HOLT.

Vitnesses:

G. W. GREGORY, B. DEWAR.

